Nissan Quest E52. Manual - part 1176

ST-30

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

CAUTION:

• When tightening the lock nut (1), be sure to fix outer

socket (2) with a wrench or an equivalent to prevent the
ball joint from getting contact with the knuckle. 

• Adjust toe-in after this procedure. The length achieved

after toe-in adjustment is not necessary the above
value.

Inspection

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INSPECTION AFTER DISASSEMBLY

Boot

Check boot for cracks, and replace it if a malfunction is detected.

Rack Assembly

Check rack for damage or wear, and replace it if a malfunction is detected.

Gear-Sub Assembly

• Check gear-sub assembly for damage or wear, and replace it if a malfunction is detected.
• Rotate gear-sub assembly and check for torque variation or rattle, and replace it if a malfunction is detected.

Gear Housing Assembly

Check gear housing assembly for damage and scratches (inner wall). Replace if there are.

Outer Socket and Inner Socket

Check the following items and replace the component if it does not meet the standard.

BALL JOINT SWINGING FORCE

Hook a spring balance at the point and pull the spring balance. Make
sure that the spring balance reads the specified value when ball stud
and inner socket start to move. Replace outer socket and inner
socket if they are outside the standard.

BALL JOINT ROTATING TORQUE

Make sure that the reading is within the following specified range
using preload gauge (A) [SST: ST3127S000 (J-25765-A)]. Replace
outer socket if the reading is outside the specified value.

BALL JOINT AXIAL END PLAY

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Measuring point of outer socket (1)

: Ball stud upper side (A)

Measuring point of inner socket (2)

: Point (B) shown in the figure

Swinging force 
(Spring balance 
measurement)

: Refer to 

ST-36, "Steering Gear 

and Linkage"

.

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Rotating torque

: Refer to 

ST-36, "Steering Gear 

and Linkage"

.

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STEERING GEAR AND LINKAGE

ST-31

< REMOVAL AND INSTALLATION >

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Apply an axial load of 490 N (50 kg, 110 lb) to ball stud. Using a dial
indicator, measure amount of stud movement, and then make sure
that the value is within the following specified range. Replace outer
socket (1) and inner socket (2) if the measured value is outside the
standard.

INSPECTION AFTER INSTALLATION

• Check if steering wheel turns smoothly when it is turned several times fully to the end of the left and right.
• Check the steering wheel play, neutral position steering wheel, steering wheel turning torque, and front

wheel turning angle.

- Steering wheel play: Refer to 

ST-11, "Inspection"

.

- Neutral position steering wheel, steering wheel turning torque, and front wheel turning angle: Refer to 

ST-6,

"Inspection"

. 

• Bleed the hydraulic system. Refer to 

ST-9, "Inspection"

.

• Check the fluid level and check for leakage. Refer to 

ST-9, "Inspection"

.

• Check wheel alignment. Refer to 

FSU-7, "Inspection"

.

• Adjust neutral position of steering angle sensor. Refer to 

BRC-49, "Work Procedure"

.

Axial end play 

: Refer to 

ST-36, "Steering Gear and 

Linkage"

.

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ST-32

< REMOVAL AND INSTALLATION >

POWER STEERING OIL PUMP

POWER STEERING OIL PUMP

Exploded View

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Removal and Installation

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REMOVAL

CAUTION:

Disconnect the battery negative terminal before performing the work.
1.

Remove reservoir tank of radiator. Refer to 

CO-13, "Exploded View"

.

2.

Remove washer tank inlet. Refer to 

WW-59, "Exploded View"

.

3.

Disconnect each connector and grand cable from power steering control module.

4.

Remove high-pressure flexible hose. Refer to 

HA-35, "HIGH-PRESSURE FLEXIBLE HOSE : Removal

and Installation"

.

5.

Remove return hose, and drain power steering fluid.

CAUTION:

• Never reuse drained power steering fluid.
• Always use the specified fluid. Refer to 

MA-10, "Fluids and Lubricants"

.

6.

Remove high-pressure piping and O-ring. Refer to 

ST-35, "Exploded View"

.

7.

Remove food side cover. Refer to 

DLK-430, "Exploded View"

.

8.

Remove oil pump assembly mounting bolts and nuts, and then remove oil pump assembly.

9.

Remove brackets.

10. Perform inspection after removal. Refer to 

ST-33, "Inspection"

.

1.

Reservoir cap

2.

Power steering oil pump assembly

3.

Bracket

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

: Always replace after every disassembly.

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POWER STEERING OIL PUMP

ST-33

< REMOVAL AND INSTALLATION >

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INSTALLATION

Note the following, and install in the reverse order of removal.
•  When installing high-pressure piping, securely install O-ring to high-pressure piping.

CAUTION:

Never reuse O-ring.

• When installing return hoses, refer to the figure.

CAUTION:

• Never apply fluid to the hose (1) and tube (2).
• Insert hose securely until it contacts spool (A) of tube.
• Leave clearance (L) when installing clamp (3).

• If noise insulator is removed, clean mounting surface, and install

new noise insulator. (Iron cover type)

CAUTION:

Never reuse noise insulator.

• Perform inspection after installation. Refer to 

ST-33, "Inspection"

.

Inspection

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INSPECTION AFTER REMOVAL

Check oil pump assembly for damage or other malfunctions. Replace if necessary.

INSPECTION AFTER INSTALLATION

• Check oil pump assembly for damage or other malfunctions. Replace if necessary.
• Check the fluid level and check for leakage. Refer to 

ST-9, "Inspection"

.

• Bleed the hydraulic system. Refer to 

ST-9, "Inspection"

.

RELIEF OIL PRESSURE

1.

Connect the oil pressure gauge (A) [SST: KV48103500 (J-
26357)] and the adapter set (B) [SST: KV481059S0 ( — )]
between oil pump discharge port and high-pressure piping.
Bleed air from the hydraulic circuit while opening valve fully.

CAUTION:

Check that O-ring is installed on adapter (male side) [SST:
KV48105920 ( — )].

2.

Start the engine and adjust the reservoir tank oil temperature to
room temperature [recommended oil temperature: approxi-
mately 20

°

C (68

°

F)].

CAUTION:

Leave the valve of the oil pressure gauge fully open while
starting and running engine. If engine is started with the
valve closed, the hydraulic pressure in oil pump goes up to
the relief pressure along with unusual increase of oil tem-
perature.

3.

Fully close the oil pressure gauge valve with engine at idle and
measure the relief oil pressure.

CAUTION:

Never keep valve closed for 10 seconds or longer.

4.

Open the valve slowly after measuring. Replace oil pump if the
relief oil pressure is outside the standard.

5.

Disconnect the oil pressure gauge and adapters from hydraulic circuit.

6.

Connect high-pressure piping with O-ring to oil pump assembly.

CAUTION:

Never reuse O-ring.

L

: 3 – 8 mm (0.12 – 0.31 in)

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Relief oil pressure

: Refer to 

ST-37, "Oil Pump"

.

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